Is the United States afraid to attack North Korea because of China or because they have their own nuclear technology?

There are many reasons why the United States will not move North Korea for the time being, not just because of China or North Korea.

First of all, from the perspective of the United States itself, North Korea is only a pawn in its global strategic interests and can be dealt with by Japan and South Korea. It is not worth the loss to use one's own military strength to attack North Korea. What's more, the domestic economic strength of the United States is weak now, and it is impossible to win the two wars of North Korea and Iran at the same time.

Secondly, China and Russia will not sit idly by and watch North Korea fall into the hands of the United States, but will definitely support North Korea explicitly or implicitly. This is definitely not what the United States wants to face. It just wants to use North Korea to create tension, win over Japan and South Korea to keep up with itself and intimidate China and Russia.

Thirdly, if North Korea's nuclear arsenal can't be solved for a while, and if North Korea really climbs over the wall to offer nuclear weapons, it will not only be the harm of East Asia, but also the end of the world.